NDLI: Simulation of Mist Transport for Gas Turbine Inlet Air Cooling

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Wang, Ting Li, Xianchang Pinninti, Venu
Copyright Year	2004
Abstract	The output and efficiency of gas turbines are reduced significantly during the summer. Gas turbine inlet air-cooling is considered a simple and effective method to increase the power output as well as thermal efficiency. Among various cooling schemes, fog cooling (a direct evaporative cooling) has gained increasing popularity due to its simplicity and low installation cost. During fog cooling, water is atomized to micro-scaled droplets (or mist) and introduced into the inlet airflow. The inlet air temperature is reduced through water evaporation. To investigate the mist transport in the entrance duct, numerical study is performed in this paper. Different fundamental geometries are considered first, which include a straight tunnel, a diffuser, a contraction, and a 90° bend. These geometries are used to investigate the effect of acceleration, deceleration, and centrifugal force on mist transport and cooling effectiveness, respectively. Lastly, a duct representing a real application is used. The effects of droplet size, droplet distribution, and humidity on cooled air temperature distribution are examined. Analysis on droplet history (trajectory and size) is employed to interpret the mechanism of droplet dynamics under influence of acceleration, diffusion, and body forces.
Sponsorship	Heat Transfer Division
Starting Page	389
Ending Page	398
Page Count	10
File Format	PDF
ISBN	079184711X
DOI	10.1115/IMECE2004-60133
Volume Number	Heat Transfer, Volume 2
Conference Proceedings	ASME 2004 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2004-11-13
Publisher Place	Anaheim, California, USA
Access Restriction	Subscribed
Subject Keyword	Heat transfer Inlet cooling Droplet evaporation Cooling Evaporation Gas turbines Simulation Drops
Content Type	Text
Resource Type	Article

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